Add 20/9 and 90/40
1st number: 2 2/9, 2nd number: 2 10/40
20/9 + 90/40 is 161/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
20/9 = 20 × 40/9 × 40 = 800/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Add the two like fractions:
800/360 + 810/360 = 800 + 810/360 = 1610/360 - 1610/360 simplified gives 161/36
- So, 20/9 + 90/40 = 161/36
In mixed form: 417/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9+90/40 20/18+90/40 20/9+90/80 60/9+90/40 20/27+90/40 20/45+90/40 20/63+90/40